Disallow reentrance of FrameView::updateLifecyclePhasesInternal()

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 7b2e3eca49d6027462409a36245261c844a251ee..5c51f1e212998dd760c4f4724ec035449ebceab5 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -2562,6 +2562,11 @@ void FrameView::notifyResizeObservers()
 // TODO(leviw): We don't assert lifecycle information from documents in child PluginViews.
 void FrameView::updateLifecyclePhasesInternal(DocumentLifecycle::LifecycleState targetState)
 {
+    if (m_currentUpdateLifecyclePhasesTargetState != DocumentLifecycle::Uninitialized) {
+        NOTREACHED() << "FrameView::updateLifecyclePhasesInternal() reentrance";
+        return;
+    }
+
     // This must be called from the root frame, since it recurses down, not up.
     // Otherwise the lifecycles of the frames might be out of sync.
     DCHECK(m_frame->isLocalRoot());